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Nutrition in Brain Aging: Its Relevance to Age-Associated Neurodegeneration

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NeuroPsychopharmacotherapy

Abstract

In the modern society, the number of the aged population having dementia and disablement is rapidly increasing, which induces medical, social, and financial problems in the developed country. The prevalence of Alzheimer and Parkinson diseases increases according to aging, indicating that brain aging is the most potent risk factor of these neurodegeneration. The molecular mechanism of aging is still an enigma. Heterogeneous and complexed factors such as accumulated oxidative stress, impaired proteolysis system, mitochondrial dysfunction, and gene mutation have been proposed. Calorie restriction (CR) can prolong the lifespan of various animals, suggesting that nutrient sensing pathways regulate the aging process. Several natural compounds called CR mimics, like metformin, rapamycin, and plant food–derived phytochemicals, were found to target the multiple intracellular signal transduction systems and delay the aging phenotypes in the animal and cellular models. However, at present clinical intervention trials have failed to show their effectiveness. Recent epidemiological studies and clinical trials suggest that lifestyle including diet, exercise, and sleep affects the risk or progression of brain aging. Especially, Mediterranean diet and low-carbohydrate diet have shown to ameliorate cognitive decline and reduce the incidence of age-associated neurodegenerative diseases. This review presents the vital role of oxidative stress, possible clinical markers, and beneficial dietary habits in aging and age-related neurodegeneration. Future strategy to intervene the brain aging by nutrition in human is discussed.

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Conflict of Interest

The authors declare that there are no conflicting financial interests in relation to the work described.

Source of Funding

This work was supported by JSPS KAKENHI Grant Number 18 K07430 (W.M).

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Correspondence to Wakako Maruyama .

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Maruyama, W., Shamoto-Nagai, M., Naoi, M. (2022). Nutrition in Brain Aging: Its Relevance to Age-Associated Neurodegeneration. In: Riederer, P., Laux, G., Nagatsu, T., Le, W., Riederer, C. (eds) NeuroPsychopharmacotherapy. Springer, Cham. https://doi.org/10.1007/978-3-319-56015-1_20-1

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  • DOI: https://doi.org/10.1007/978-3-319-56015-1_20-1

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-56015-1

  • Online ISBN: 978-3-319-56015-1

  • eBook Packages: Springer Reference MedicineReference Module Medicine

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